Approximate full-depth EDF-S sky footprint (shown in a blue outline) overlaid on top of the 57-square-degree SPT-3G coadded temperato maps in the ZEA projection. In this RGB image, the 95 GHz data are shown in the red channel, 150 GHz data are green, and 220 GHz data ar blue. The image was generated using the stiff (Bertin 2012) command stiff coadd_map_ZEA_95GHz.fits coadd_map_ZEA_150GHz.fit: coadd_map_ZEA_220GHz.fits -MIN_TYPE MANUAL -MAX_TYPE MANUAL -MIN_LEVEL -140 -MAX_LEVEL 140 -GAMMA. Notable feature of the map include the small-angular-scale CMB temperature fluctuations, emissive point sources which appear as red and blue bright dots and tSZ decrements from galaxy clusters which appear as compact dark spots. Artifacts from interpolated bright sources appear as discs of which a close-up is shown in Fig. 3. The map border is an apodized edge (apodization is described in Sect. 5.1).